Machine for cutting moldings



2 Sheets-Sheet 1.

(No Model.)

G. P. VIG'KEN.

MACHINE FOR CUTTING MOLDINGS.

No. 375,904. Patented Jan. a, 71888.

N PETERS, Photo-Lithography, Washinghm, D, C.

'(No Model.) 2 Sheets-She'et 2.

G. P. VIGKEN.

MAGHINE'FOR OUTTING MOLDINGS.

.No. 375,904. Patented Jan. 3., 1888.

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[12 Men for M ZZQ M N. PETERS. Pholnlflhographcr, Wichinglovl, D. C.

UNITED STATES PATENT OFFICE.

GEORGE P. VICKEN, OF CINCINNATI, OHIO.

MACHINE FOR currme MOLDINGS.

SPECIFICATION forming part of Letters Patent No. 37 5,904, dated January3, 1888.

Application filed June'd, 1886. Serial No. 203,974. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE P. VIOKEN, a citizen of the United States,and a resident of the city of Cincinnati, Hamilton county, State ofOhio, have invented certain new and useful Improvements in Machines forCutting Moldings, of which the following is a specification.

The different features of my invention and their various uses andadvantages, conjointly or otherwise,will be apparent from the followingdescription.

In the accompanying drawings, forming part of this specification, Figure1 is a perspective View of a machine embodying my improvements. Fig. 2is a perspective view of the same machine, showing the side hidden inFig. 1. Fig. 3 is a central longitudinal vertical section of the bed andmoving table. Fig. 4 shows in detail the several parts of the clamp forsecuring the piece to be molded to the table. Fig. 5 is a top view ofthe front end of the bed, the table being removed. Fig. 6 is a sectiontaken at thelineXX, Fig. 3, and looking up. Fig. 7 is a centrallongitudinal section of the adjustable stop on the worm-stem forallowing the slack in the gearing to be taken up. Fig. 8 is a top viewof the side supports and knife-frame, the top cross-piece being removed.Fig. 9 is a vertical central section through the center of the clampingdevice. Fig. 10 is a side elevation of the cam for raising and loweringthe cutter head or frame. Fig. 11 represents a vertical section of thehead or frame'which holds the knife, said section being taken at theline X X of Fig. 8; and Fig. 12 illustrates one mode of taking up lostmotion. Figs. 13 and 14 are perspective views of specimens of work madeon my machine.

The bed B is supported on the legs A. It is a hollow rectangular box,open top and bottom. The sliding table 0 rests on the top of the box B,and suitable guides are provided to govern its motion. Within the box orbed B the worm D is journaled, being supported by-the end piece, B, andcross-brace B". From the under side of the table 0 the lug 0 projeetsdownwardly. The worm D passes through the lug O, engaging with ascrewthread therein, and becomes in this way the means of impartingmotion to the table 0.

One end of the shaft of the worm D is provided with the gear-wheel D,which meshes with the pinion E on the shaft E. The shaft E is providedwith suitable pulleys for the attachment of driving belts, the preferrednumber of pulleys being three-via, W' W W the center pulley, W, beingthe fixed or driving pulley, and the other pulleys, V W, being loosepulleys. The inner end of the worm-shaft terminates in a beveled wheel,F, which meshes with the beveled wheel F on the shaft F The shaft F issupported by the sides of the bed 13, and on one end, outside of the bedB, it is provided with the pinion F The pinion F meshes with the idlerF, and through it transmits motion to the pinion F and its shaft F. Theidler F is attached to the plate R, and by raising thelatter plate theidler is thrown out of gear.

A preferred means for securing the plate R in the aforementioned raisedor lowered position,as desired, consists as follows: The plate R isprovided with a curved slot, R, and through this slot passes a bolt, Bwhose head is outside of the plate, and by tightening a nut screwed onthe bolt between the plate R and the side of the machine the plate R isclamped between this boltiiead and nut and held in position. On theother end of the shaft F is a cam, G, on the surface of which a pin, 9,from the brake H rests. The brakeI-I is rigidly attached to therock-shaft H. An arm, H is rigidly attached to the rock-shaft H on theopposite side of the bed from the brake. One of the connecting'rods Ifor opcrating the knife-frame is attached to the brake H and the otherto the arm H. The supports J are attached to the bed B in any suitablemanner, and each support J is provided with guides for the knife-frameK. Rods L extend upward from the knife-frame and project through thecross-piece J. Each rod L is surrounded by a spring, Z, which iscompressed between the cross-piece J and the top Z of the rod. Thesesprings keep the pin g of the brake or lever H against the face of thecam G, and they also raise the knife-carrying frame. This knife frameKmay consist of one piece and the knife be rigidly attached thereto; butit is desirable that the knife be adjust-able vertically and alsolaterally in a ICO convenient manner. The principal object of thevertical adjustment of the knife is for the purpose of feeding the knifeinto the wood as desired. The principal object of the lateral adjustmentof the knife on its support is to vary laterally the line of molding andto adjust the knife to the position of the wood clamped to the bed.Apreferred mode of obtaining such adjustment is as follows: Theknife-frame K consists of parts as follows: the principal plate K, whichslides in the vertical grooves of supports J. To it are attached theadjustable parts of the frame. The plate K is attached to the plate K bythe beveled lugs 1, which fit behind the beveled shoulders 2, whichproject from the plate K*. For convenience in removing the plate K, theupper one of these beveled shoulders 2 is made separate from the plate Kand is bolted thereto. The rod M extends horizontally across themachine, being supported in bearings in the uprights J and held inposition by collars hearing on the inside of the uprights J. This rod Mis screw-threaded, and is screwed through the lug 3, projecting from theback of the plate K The plate K is adjusted laterally on the plate K bymeans of the rod M, one end of which is provided with a crank-handle.

The plate K carries the knife K, and is itself adapted for verticaladjustment on the plate K". In Fig. 8 guides 4,projecting from theface-plate K are shown dovetailed into the plate K. These guides 4 allowthe plate K to be moved vertically, and at the same time hold this plateto plate K. The screw 5 is screwed through the lug 6,projecting from andfixed to the plate 10, and is swiveled in the plate K serving to adjustthis latter vertically on the plate K". By the combination of these twoadjustments the knife K may be adapted to any conditions of the piece tobe cut, while the motion of the knife-carrying frame as a whole isunchanged and positive.

The piece of wood to be molded is clamped on the table Q between theledge 0" on one side of the table and the adjustable clamps N on theother side of the table. These clamps are shown in detail in Figs. 4 and9. Sockets 1? are cut into the edge of the table 0, and slots 1),preferably of lesser width than the sockets, extend from them through tothe top of the table. In each of the sockets P a clamp, N, is fitted.The outer end of the socket P is closed by a portion, g. This portion ispreferably made (for the purpose of conveniently inserting theelamp-pieee N) separate from the table 0 and in the form of a plate, q.This plate q is held in place in the table by two or more screws, q,passing through the table itself. A. screw, Q, extends lengthwisethrough the socket P and passes through the clamp and engages ascrewthread in the clamp, and the latter is thereby moved back andforth. This screw is held in position by the collar g, which collarengages a circumferential channel on the screw, and has a bearingagainst the plate q. The outer end of the screw Q is squared for theapplication of a wrench, as shown; or it may be provided with a crankand handle.

The mode of operation of the machine is as follows: The piece to bemolded is secured to the table 0 by being clamped between the ledge Cand the clamps N. The table is then moved to the right-hand end of thebed, as shown in Fig. 3. When the machineis started, the worm D movesthe table 0 forward toward that end of the table which is on the lefthand in Fig. 3, and also, through the mechanism of the cog-wheelsdescribed, the worm operates the cam G. The cam G is of such a shapethat it, in connection with the springs Z and interveningmechanisnnimparts a rocking motion to the shaft H. In this manner anup-and down reciprocal movement is given to the knifefra-me K, and atthe same time the table G is moved under the knife. The surface of thecam may be formed into various curves of different shapes, lengths, andheights beyond the smallest diameter of the cam. Many different shapescan be carved in this way. When it is desired to make simpler or plainmoldings, or, more usually, when it is desired, as is sometimes thecase, to cut out the main lines of molding preparatory to forming thebeaded or wave-like moldings, the plate It is elevated, the idler F* isthrown out of gear, and the revolution of the cam G stopped, and thereciprocating movement of the knife ceases, and the latter will then cutsimple or plain moldings. In the gearing between the end of the worm Dand the cam G there will, in practice, between the forward and reversemovement of the machine, usually be more or less lost motion resultingfrom the nature of construction, wear, or other cause. The result ofthis, unless corrected, will be to start the table moving before theknife or the latter moving before the table. Now it is necessary thatboth knife and table shall commence to move at the same time. Toaccomplish this I arrange to have lost motion in the table-movingmechanism, which can be adjusted so as to exactly equal the lost motionof the knife-operating mechanism. On the shaft of the worm D the nut Sis rigidly attached. A stop, S, screws into the nut S and moves looselyover the shaft of the worm D. (See Fig. 3 and in this connection Fig.7.) \Vhen the worm is started, it moves as a whole to the right untilthe stop S gets a bearing against the end B of the bed B. Then,the wormstopping, the table 0 is moved forward. The stop S, being adjustable inthe nut S, can be set to take up all or a part of the motion lost in theknifemoving mechanism.

Another means for allowing for thelost motion is shown in Figs. 3 and(i. The lug G is attached to the table by bolts 0", passing throughslots 0* in the flanges of the lug. The bolts not being fastened tight,the lug has a certain amount of lost motion as it moves until it strikesthe bolt. The lengths of slots 0* are to be varied according to the lostmotion to be I Oh IIO

taken up. Another means of correcting this lost motion consists inallowing a slip of any of the gear-wheels,'excepting D and E; and thepreferred means of allowing them to slip is by a slot, 10, formed inthem next to the shaft, a key, 12, from the shaft playing in said slotand duly engaging and turning the gear-wheel when the key strikesagainst either end of the slot. This construction is shown in Fig. 12.Still another means of correcting this lost motion consistsin providingthe cam G with slots 9, through which the bolts pass which secure thecam to the shaft. These slots allow considerable variation in theposition of the cam on the shaft.

By means of this machine moldings of many shapes may be out upon theflat surfaces, some examples of which are shown in the drawings. (SeeFigs. 13 and 14.)

What I claim as new and of my invention, and desire to secure by LettersPatent, is-- In a machine for cutting moldin s, the combination of table0, provided wlth lug G, worm D, beveled gear-wheels F F, shaft Fgear-wheels F 1*, and F shaft F, cam G, brake H, rockshatt H,connectingrods I, supports J, having cross-piece J, knife-frame K,having rods L, springs Z, and knife K, as and for the purposes setforth.

GEO. P. VIOKEN.

Witnesses:

M. M. SMITH, J No. W. STBEHLI.

